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TO ALL WHOM IT MAY CONCERN:

Be it known that I,GE0RGE BILILL, of Philadelphia, Pennsylvania, haveinvented an improvement in Axle- Boxes; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing, and to the letters of reference marked thereon. v

My invention consists of a sliding door having a pin with a collar, the whole being/constructed and adapted to an axle-box substantially as described hereafter, so that the door may be securely packed and irmly held in its place by the said pin and collar, and easily withdrawn after simply turning the pin to a limited extent. I

In order to enable others skilled in the art to make'A and use my invention, I \\'ill now proceed todescribe its construction and operation. On referenoeto the accompanyingdrawing, which t'orms apart of this specification- Figure l is a longitudinal section of my improved axle-box- I I Figure 2, a transverse Vertical section on the line 1 2, tig. 1.

Figure 3, a plan View; and

Figure d, a plan view of part of the box as it appears when the sliding dogr has been removed.

Similar letters refer to similar parts throughout the several views. A

A is the top, A the bottom, B the rear, and B the front o'r" the permanent portion of the box, D heilig the usual step, bearing against the under side of the top A, and being adapte-d to the journalE of the axle. Y F is tb@ 'detachable front or door, the lower end of which bears upon the upper edge of the permanent front B of the box,

where a lip, z, fitting in a recess in the door prevents the latter from being moved outwards, the upper horizontal 'portion oi' the door tting against the front end b of the top A 0i' the box. The door is adjusted to its place in front of the box by'sliding the'form'er downwards from above, there being on the inside of the box, and at each side of the' same, arib, y, againstivhich bcursthe door, so that the latter cannot bemoved inwards. A Hat edge, 11)is thus presented on three sides of the door, and this edge is groovcd for the reception of a packing strip, G, which, bearing against the box, prevents the escape of lubricating material from the latter. In the upper portion of the door turns a pin, H, having at its upper end a collar, L, and a square or other suitably,- iormed head, t', there being at' the lower end of the piu a collar, m, against which vbears a spiral spring, n, eontained in a recess in the door, this spring having a tendency to depress the pin H, and to cause the collar ii to bear with such force on the top of the door that the pin cannot be turned without considerable eil'ort. In piace of this spring andthe collar m, the pin may be so tightly riveted to the door that it cannot be turned without an oilortv As seen in gs. l and 3, a portion of the cellar rprojeets into and fits snugly in a recess formed in the ond of the top A of the box, thereby locking the door to the latter so securely that it cannot possibly be slinken loose by the jarring oi' the box. It will be seen on reference to iig. 3 that aportion/,of the collar 7i is eut away at y, so that when the 'pin I-I has been so far turned that this cut-away portion coincides with the front b of the top A of the box the door is at liberty to be elevated from its place. A small pin, g, projects from the collar i into a segmental recess (shown in dotted lines, 3)in' the door. When the pin is at one end of this recess the pin H has been turnedto an extent sufficient to lock the door to the box, and when the pin g is at the opposite end ofthe recess, the collar z is in such a position as to permit the removal of the door.

I claim as my invention, and desire to secure by Letters latcntl l. Thev sliding door F, and pin H, with its collar 7L, the whole being constructed and adapted to an axle-box substantially as and. for the purpose herein set forth. I

The ribs y l and lip z, arranged on the box for the retention of the door, as set forth. 73. The packing strip G, adapted to the door and box, as described for the purpose specied. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GL BRIIiL.

Witnesses:

E. Hou/son, WM. DAVIS. 

